Method for inserting work-pieces.



C. SANDOZ-MORITZ. `AMETHOD PoR INSERTING WORK PIEGBS.

APPLICATION P1LBD AUG.9, 1912. y

Patented-July 1, 1913.

if @ff/MH Milf ti 11 STATES c METHOD ron :usuarias wonxrmcns.

Specification of Letters Patent.

Patented July 1, 1913.

Application filed August 9, 1912. Serial No. 714,245.

To all whom, t may concern.'

Be it known that I, CHARLES SANDOZ- MORITZ, a citizen of the Republic ofSwitzerland, and residing at Tavannes, Switzerland, have inventedcertain new and useful Improvements in Methods for Insertingfork-Pieces, of which the following is a specification.

The present invention has reference to im proveniente in methods forinserting work pieces, such as screws, pins, studs, rivets, hands, andthe like, into perforated plates, or for assembling work pieces, forinstance the bars and heads in lantern pinions, by means of air pressureand simultaneous shaking action.

In a prior application (Serial No. 657,596, filed October 30, 1911) andanother application divisional thereof (Serial No. 714,244, led August9, 1912) I have described an apparatus and a method for inserting suchwork pieces by means of air pressure, and the present invention moreparticularly relates to an improvement of my prior inventions theredescribed.

As I found that in practical operation the parts to be inserted orassembled often are not fully forced home in their seats, so that manualafteretreatment is required, I have added to the shaking and pressureaction to which the parts to be inserted are subjected, a hammeringaction, with the result that now the parts are more quickly andcompletely assembled in one operation without after-treatment. j f

In order to make this invention more readily understood, I will -nowdescribe it with reference to the accompanying drawing, in which- Figure1 represents a vertical section through one form of apparatus in whichmy new method may be carried out; Fig. 2

shows a section through part of the work receiving bowl with theexchangeable false bottom, and two lantern pinions in elevation; Fig. 3shows a lantern pinion partly assembled, with two battering slugs asthey appear in action; Fig. 4 represents a top view of the false bottomwith inserted lantern pinion bodies, and bars and slugs scatteredpromiscuously over it.

In the lower part of the machine housing c is provided a blower b, whichsucks in the air through port c, and forces it out through the conduitCZ, in whose upper straight part slides airtightly the tube e, whichruns out into the curved passage f. VThis latter opens into the hopperor bowl g at 7L. The bowl is provided with an airtightly closable coveri, with a slopingbotto'm la, and with a discharge Z at the lowermostpart. To the upper end of t-he tube e are fulcrumed the upper ends oftwo connecting rods m, secured at their other ends to eccentrics n,which are driven from the rotary shaft 0. Upon this shaft revolving, thebowl g will be reciprocated in an up and down direction.

Within the bowl, below the orifice h is removably secured the perforatedplate or false bottom p, whose construction may vary greatly accordingto requirements. In the example shown, the plate is intended forassembling the bars and heads to form lantern wheels such as areextensively used in clock making, and it consists of a plate with aplurality of bores 1, arranged in a circle. A smaller disk s isadjustably suspended below the larger one by means of the screw ybolt t,which serves also as handle.

The bodies of the lantern pinions are inserted by hand into theperforations r, their spindles resting on the lower disk, as shown inFig. 2. The plate p is now placed into the bowl g, a lot of bars u arescattered over the plate. the cover is closed down, and the machine isstarted, when a powerful current of pressure air is sent through theperforations 1 in the false bottom which forces the bars u, which arekept in constant agitation by the reciprocatory movement of the bowl,into their seats in the heads u of the lantern pinions. As the describedoperation often is vnot powerful enough to drive the bars entirely home,I employ additional hammering means for this purpose in the shape ofsmall pieces of metal, so-called slugs fw, which are scattered freelyover the perforated plate, as shown in Fig. 4, and which impelled by thecombined shaking and pressure action quickly batter the bars home intheir seats. Each sudden descent of the bowl, moreover,

causes the inclosed column of pressure air Y to become momentarily stillfurther compressed, and these quickly recurring extracompressionsgreatly aid the battering action of the slugs. At the end of theoperation, the cover i is lifted, the perforated plate 79 is tilted,when the excess bars and the slugs drop down the inclinedbottom of thebowl into the tray y, and the plate is removed by the handle t andreplaced by a fresh plate. l

What I'claim is 1. The hereindesoribed method for inserting pins orthelike in` a perforated member, consisting in impartingv an up and downreeiprocatory movement tothe perforate member, confined with asuperposed aggregation of the loose pins, and in simultaneouslysubjeoting the assemblage to an air blast Within a closed container, theair blast passinzgr through the said perforate member from abovedownwardly. 1

2. The hereindeseribedf method of inserting' Pins or the like in aperforated member, consisting in imparting an lip and dovvn Copies ofthis patentv may be obtained for reoiprooatory movement to the perforatemember, confined with a superposed aggregation of the loose pinsinterspersed with relatively heavy elements, and in simultaneousl7subjectingr the assemblage to a Current of pressure air Within a closedcontainer, the air blast passing through the said perforate member fromabove downwardly.

In testimony whereof -I affix my signature in presence of two Witnesses.

CHARLES SANDOZ-MORITZ. lVitnesses E. C. HssEs, C. VELLS.

five cents each, byiaddressing the Commissioner of Patents,

Washington, D. C.

